1 /* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
2 * vim:expandtab:shiftwidth=8:tabstop=8:
6 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License version 2 only,
10 * as published by the Free Software Foundation.
12 * This program is distributed in the hope that it will be useful, but
13 * WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * General Public License version 2 for more details (a copy is included
16 * in the LICENSE file that accompanied this code).
18 * You should have received a copy of the GNU General Public License
19 * version 2 along with this program; If not, see
20 * http://www.sun.com/software/products/lustre/docs/GPLv2.pdf
22 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
23 * CA 95054 USA or visit www.sun.com if you need additional information or
29 * Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved.
30 * Use is subject to license terms.
33 * This file is part of Lustre, http://www.lustre.org/
34 * Lustre is a trademark of Sun Microsystems, Inc.
36 * lustre/utils/mkfs_lustre.c
38 * Author: Nathan Rutman <nathan@clusterfs.com>
41 /* This source file is compiled into both mkfs.lustre and tunefs.lustre */
45 #endif /* HAVE_CONFIG_H */
57 #include <sys/types.h>
59 #include <sys/mount.h>
60 #include <sys/utsname.h>
68 /* kp30.h is not really needed here, but on SLES10/PPC, fs.h includes idr.h which
69 * requires BITS_PER_LONG to be defined */
70 #include <libcfs/kp30.h>
72 #include <linux/fs.h> /* for BLKGETSIZE64 */
74 #include <linux/version.h>
76 #include <lustre_disk.h>
77 #include <lustre_param.h>
78 #include <lnet/lnetctl.h>
79 #include <lustre_ver.h>
80 #include "mount_utils.h"
86 #define MAX_LOOP_DEVICES 16
87 #define L_BLOCK_SIZE 4096
88 #define INDEX_UNASSIGNED 0xFFFF
89 #define MO_IS_LOOP 0x01
90 #define MO_FORCEFORMAT 0x02
91 #define min(x,y) ((x)<(y) ? (x) : (y))
93 /* used to describe the options to format the lustre disk, not persistent */
95 struct lustre_disk_data mo_ldd; /* to be written in MOUNT_DATA_FILE */
96 char mo_device[128]; /* disk device name */
97 char mo_mkfsopts[128]; /* options to the backing-store mkfs */
98 char mo_loopdev[128]; /* in case a loop dev is needed */
99 __u64 mo_device_sz; /* in KB */
102 int mo_mgs_failnodes;
107 static int print_only = 0;
108 static int failover = 0;
110 void usage(FILE *out)
112 fprintf(out, "%s v"LUSTRE_VERSION_STRING"\n", progname);
113 fprintf(out, "usage: %s <target types> [options] <device>\n", progname);
115 "\t<device>:block device or file (e.g /dev/sda or /tmp/ost1)\n"
117 "\t\t--ost: object storage, mutually exclusive with mdt,mgs\n"
118 "\t\t--mdt: metadata storage, mutually exclusive with ost\n"
119 "\t\t--mgs: configuration management service - one per site\n"
120 "\toptions (in order of popularity):\n"
121 "\t\t--mgsnode=<nid>[,<...>] : NID(s) of a remote mgs node\n"
122 "\t\t\trequired for all targets other than the mgs node\n"
123 "\t\t--fsname=<filesystem_name> : default is 'lustre'\n"
124 "\t\t--failnode=<nid>[,<...>] : NID(s) of a failover partner\n"
125 "\t\t--param <key>=<value> : set a permanent parameter\n"
126 "\t\t\te.g. --param sys.timeout=40\n"
127 "\t\t\t --param lov.stripesize=2M\n"
128 "\t\t--index=#N : target index (i.e. ost index within the lov)\n"
129 /* FIXME implement 1.6.x
130 "\t\t--configdev=<altdevice|file>: store configuration info\n"
131 "\t\t\tfor this device on an alternate device\n"
133 "\t\t--comment=<user comment>: arbitrary user string (%d bytes)\n"
134 "\t\t--mountfsoptions=<opts> : permanent mount options\n"
136 "\t\t--backfstype=<fstype> : backing fs type (ext3, ldiskfs)\n"
137 "\t\t--device-size=#N(KB) : device size for loop devices\n"
138 "\t\t--mkfsoptions=<opts> : format options\n"
139 "\t\t--reformat: overwrite an existing disk\n"
140 "\t\t--stripe-count-hint=#N : used for optimizing MDT inode size\n"
142 "\t\t--erase-params : erase all old parameter settings\n"
143 "\t\t--nomgs: turn off MGS service on this MDT\n"
144 "\t\t--writeconf: erase all config logs for this fs.\n"
146 "\t\t--dryrun: just report what we would do; "
147 "don't write to disk\n"
148 "\t\t--verbose : e.g. show mkfs progress\n"
150 (int)sizeof(((struct lustre_disk_data *)0)->ldd_userdata));
154 #define vprint if (verbose > 0) printf
155 #define verrprint if (verbose >= 0) printf
157 /*================ utility functions =====================*/
159 char *strscat(char *dst, char *src, int buflen) {
161 if (strlen(dst) + strlen(src) >= buflen) {
162 fprintf(stderr, "string buffer overflow (max %d): '%s' + '%s'"
163 "\n", buflen, dst, src);
166 return strcat(dst, src);
170 char *strscpy(char *dst, char *src, int buflen) {
172 return strscat(dst, src, buflen);
176 dev_major (unsigned long long int __dev)
178 return ((__dev >> 8) & 0xfff) | ((unsigned int) (__dev >> 32) & ~0xfff);
182 dev_minor (unsigned long long int __dev)
184 return (__dev & 0xff) | ((unsigned int) (__dev >> 12) & ~0xff);
189 static int version = 0;
193 char release[4] = "";
195 fd = open("/proc/sys/kernel/osrelease", O_RDONLY);
197 fprintf(stderr, "%s: Warning: Can't resolve kernel "
198 "version, assuming 2.6\n", progname);
200 if (read(fd, release, 4) < 0) {
201 fprintf(stderr, "reading from /proc/sys/kernel"
202 "/osrelease: %s\n", strerror(errno));
208 if (strncmp(release, "2.4.", 4) == 0)
216 static int check_mtab_entry(char *spec)
221 fp = setmntent(MOUNTED, "r");
225 while ((mnt = getmntent(fp)) != NULL) {
226 if (strcmp(mnt->mnt_fsname, spec) == 0) {
228 fprintf(stderr, "%s: according to %s %s is "
229 "already mounted on %s\n",
230 progname, MOUNTED, spec, mnt->mnt_dir);
239 /*============ disk dev functions ===================*/
241 /* Setup a file in the first unused loop_device */
242 int loop_setup(struct mkfs_opts *mop)
248 /* Figure out the loop device names */
249 if (!access("/dev/loop0", F_OK | R_OK))
250 strcpy(loop_base, "/dev/loop\0");
251 else if (!access("/dev/loop/0", F_OK | R_OK))
252 strcpy(loop_base, "/dev/loop/\0");
254 fprintf(stderr, "%s: can't access loop devices\n", progname);
258 /* Find unused loop device */
259 for (i = 0; i < MAX_LOOP_DEVICES; i++) {
261 int cmdsz = sizeof(cmd);
263 sprintf(l_device, "%s%d", loop_base, i);
264 if (access(l_device, F_OK | R_OK))
266 snprintf(cmd, cmdsz, "losetup %s > /dev/null 2>&1", l_device);
269 /* losetup gets 1 (ret=256) for non-set-up device */
271 /* Set up a loopback device to our file */
272 snprintf(cmd, cmdsz, "losetup %s %s", l_device,
274 ret = run_command(cmd, cmdsz);
276 /* someone else picked up this loop device
280 fprintf(stderr, "%s: error %d on losetup: %s\n",
281 progname, ret, strerror(ret));
284 strscpy(mop->mo_loopdev, l_device,
285 sizeof(mop->mo_loopdev));
290 fprintf(stderr, "%s: out of loop devices!\n", progname);
294 int loop_cleanup(struct mkfs_opts *mop)
298 if ((mop->mo_flags & MO_IS_LOOP) && *mop->mo_loopdev) {
299 sprintf(cmd, "losetup -d %s", mop->mo_loopdev);
300 ret = run_command(cmd, sizeof(cmd));
305 /* Determine if a device is a block device (as opposed to a file) */
306 int is_block(char* devname)
311 ret = access(devname, F_OK);
314 ret = stat(devname, &st);
316 fprintf(stderr, "%s: cannot stat %s\n", progname, devname);
319 return S_ISBLK(st.st_mode);
322 __u64 get_device_size(char* device)
327 fd = open(device, O_RDONLY);
329 fprintf(stderr, "%s: cannot open %s: %s\n",
330 progname, device, strerror(errno));
335 /* size in bytes. bz5831 */
336 ret = ioctl(fd, BLKGETSIZE64, (void*)&size);
341 ret = ioctl(fd, BLKGETSIZE, (void*)&lsize);
342 size = (__u64)lsize * 512;
347 fprintf(stderr, "%s: size ioctl failed: %s\n",
348 progname, strerror(errno));
352 vprint("device size = "LPU64"MB\n", size >> 20);
353 /* return value in KB */
357 int loop_format(struct mkfs_opts *mop)
361 if (mop->mo_device_sz == 0) {
363 fprintf(stderr, "loop device requires a --device-size= "
368 ret = creat(mop->mo_device, S_IRUSR|S_IWUSR);
369 ret = truncate(mop->mo_device, mop->mo_device_sz * 1024);
372 fprintf(stderr, "%s: Unable to create backing store: %d\n",
379 /* Display the need for the latest e2fsprogs to be installed. make_backfs
380 * indicates if the caller is make_lustre_backfs() or not. */
381 static void disp_old_e2fsprogs_msg(const char *feature, int make_backfs)
383 static int msg_displayed;
386 fprintf(stderr, "WARNING: %s does not support %s "
387 "feature.\n\n", E2FSPROGS, feature);
393 fprintf(stderr, "WARNING: The %s package currently installed on "
394 "your system does not support \"%s\" feature.\n",
396 #if !(HAVE_LDISKFSPROGS)
397 fprintf(stderr, "Please install the latest version of e2fsprogs from\n"
398 "http://downloads.lustre.org/public/tools/e2fsprogs/\n"
399 "to enable this feature.\n");
402 fprintf(stderr, "Feature will not be enabled until %s"
403 "is updated and '%s -O %s %%{device}' "
404 "is run.\n\n", E2FSPROGS, TUNE2FS, feature);
407 /* Check whether the file exists in the device */
408 static int file_in_dev(char *file_name, char *dev_name)
411 char debugfs_cmd[256];
412 unsigned int inode_num;
415 /* Construct debugfs command line. */
416 snprintf(debugfs_cmd, sizeof(debugfs_cmd),
417 "%s -c -R 'stat %s' '%s' 2>&1 | egrep '(Inode|unsupported)'",
418 DEBUGFS, file_name, dev_name);
420 fp = popen(debugfs_cmd, "r");
422 fprintf(stderr, "%s: %s\n", progname, strerror(errno));
426 if (fscanf(fp, "Inode: %u", &inode_num) == 1) { /* exist */
430 i = fread(debugfs_cmd, 1, sizeof(debugfs_cmd), fp);
433 fprintf(stderr, "%s", debugfs_cmd);
434 if (strstr(debugfs_cmd, "unsupported feature")) {
435 disp_old_e2fsprogs_msg("an unknown", 0);
444 /* Check whether the device has already been used with lustre */
445 static int is_lustre_target(struct mkfs_opts *mop)
448 vprint("checking for existing Lustre data: ");
450 if ((rc = file_in_dev(MOUNT_DATA_FILE, mop->mo_device))) {
452 (rc == 1) ? MOUNT_DATA_FILE : "extents");
453 /* in the -1 case, 'extents' means this really IS a lustre
458 if ((rc = file_in_dev(LAST_RCVD, mop->mo_device))) {
459 vprint("found %s\n", LAST_RCVD);
463 vprint("not found\n");
464 return 0; /* The device is not a lustre target. */
467 /* Check if a certain feature is supported by e2fsprogs.
468 * Firstly we try to use "debugfs supported_features" command to check if
469 * the feature is supported. If this fails we try to set this feature with
470 * mke2fs to check for its support. */
471 static int is_e2fsprogs_feature_supp(const char *feature)
475 char imgname[] = "/tmp/test-img-XXXXXX";
479 snprintf(cmd, sizeof(cmd), "%s -c -R \"supported_features %s\" 2>&1",
482 /* Using popen() instead of run_command() since debugfs does not return
483 * proper error code if command is not supported */
484 fp = popen(cmd, "r");
486 fprintf(stderr, "%s: %s\n", progname, strerror(errno));
489 ret = fread(cmd, 1, sizeof(cmd), fp);
491 if (strstr(cmd, feature) && !(strstr(cmd, "Unknown")))
495 if ((fd = mkstemp(imgname)) < 0)
498 snprintf(cmd, sizeof(cmd), "%s -F -O %s %s 100 >/dev/null 2>&1",
499 MKE2FS, feature, imgname);
500 /* run_command() displays the output of mke2fs when it fails for
501 * some feature, so use system() directly */
509 static void disp_old_kernel_msg(char *feature)
511 fprintf(stderr, "WARNING: ldiskfs filesystem does not support \"%s\" "
512 "feature.\n\n", feature);
515 static void enable_default_backfs_features(struct mkfs_opts *mop)
518 int maj_high, maj_low, min;
521 if (IS_OST(&mop->mo_ldd)) {
522 strscat(mop->mo_mkfsopts, " -O dir_index,extents",
523 sizeof(mop->mo_mkfsopts));
525 strscat(mop->mo_mkfsopts, " -O dir_index",
526 sizeof(mop->mo_mkfsopts));
529 /* Upstream e2fsprogs called our uninit_groups feature uninit_bg,
530 * check for both of them when testing e2fsprogs features. */
531 if (is_e2fsprogs_feature_supp("uninit_groups") == 0)
532 strscat(mop->mo_mkfsopts, ",uninit_groups",
533 sizeof(mop->mo_mkfsopts));
534 else if (is_e2fsprogs_feature_supp("uninit_bg") == 0)
535 strscat(mop->mo_mkfsopts, ",uninit_bg",
536 sizeof(mop->mo_mkfsopts));
538 disp_old_e2fsprogs_msg("uninit_bg", 1);
544 sscanf(uts.release, "%d.%d.%d", &maj_high, &maj_low, &min);
545 printf("%d %d %d\n", maj_high, maj_low, min);
547 /* Multiple mount protection is enabled only if failover node is
548 * specified and if kernel version is higher than 2.6.9 */
550 if (KERNEL_VERSION(maj_high, maj_low, min) >=
551 KERNEL_VERSION(2,6,9)) {
552 if (is_e2fsprogs_feature_supp("mmp") == 0)
553 strscat(mop->mo_mkfsopts, ",mmp",
554 sizeof(mop->mo_mkfsopts));
556 disp_old_e2fsprogs_msg("mmp", 1);
558 disp_old_kernel_msg("mmp");
562 /* Build fs according to type */
563 int make_lustre_backfs(struct mkfs_opts *mop)
565 __u64 device_sz = mop->mo_device_sz, block_count = 0;
566 char mkfs_cmd[PATH_MAX];
571 if (!(mop->mo_flags & MO_IS_LOOP)) {
572 mop->mo_device_sz = get_device_size(mop->mo_device);
574 if (mop->mo_device_sz == 0)
577 /* Compare to real size */
578 if (device_sz == 0 || device_sz > mop->mo_device_sz)
579 device_sz = mop->mo_device_sz;
581 mop->mo_device_sz = device_sz;
584 if (mop->mo_device_sz != 0) {
585 if (mop->mo_device_sz < 8096){
586 fprintf(stderr, "%s: size of filesystem must be larger "
587 "than 8MB, but is set to %lluKB\n",
588 progname, (long long)mop->mo_device_sz);
591 block_count = mop->mo_device_sz / (L_BLOCK_SIZE >> 10);
592 /* If the LUN size is just over 2^32 blocks, limit the
593 * filesystem size to 2^32-1 blocks to avoid problems with
594 * ldiskfs/mkfs not handling this size. Bug 22906 */
595 if (block_count > 0xffffffffULL && block_count < 0x100002000ULL)
596 block_count = 0xffffffffULL;
599 if ((mop->mo_ldd.ldd_mount_type == LDD_MT_EXT3) ||
600 (mop->mo_ldd.ldd_mount_type == LDD_MT_LDISKFS) ||
601 (mop->mo_ldd.ldd_mount_type == LDD_MT_LDISKFS2)) {
602 /* Journal size in MB */
603 if (strstr(mop->mo_mkfsopts, "-J") == NULL) {
604 /* Choose our own default journal size */
605 long journal_sz = 0, max_sz;
606 if (device_sz > 1024 * 1024) /* 1GB */
607 journal_sz = (device_sz / 102400) * 4;
609 max_sz = (102400 * L_BLOCK_SIZE) >> 20; /* 400MB */
610 if (journal_sz > max_sz)
613 sprintf(buf, " -J size=%ld", journal_sz);
614 strscat(mop->mo_mkfsopts, buf,
615 sizeof(mop->mo_mkfsopts));
619 /* bytes_per_inode: disk size / num inodes */
620 if (strstr(mop->mo_mkfsopts, "-i") == NULL) {
621 long bytes_per_inode = 0;
623 if (IS_MDT(&mop->mo_ldd))
624 bytes_per_inode = 4096;
626 /* Allocate fewer inodes on large OST devices. Most
627 filesystems can be much more aggressive than even
629 if ((IS_OST(&mop->mo_ldd) && (device_sz > 1000000)))
630 bytes_per_inode = 16384;
632 if (bytes_per_inode > 0) {
633 sprintf(buf, " -i %ld", bytes_per_inode);
634 strscat(mop->mo_mkfsopts, buf,
635 sizeof(mop->mo_mkfsopts));
639 /* Inode size (for extended attributes). The LOV EA size is
640 * 32 (EA hdr) + 32 (lov_mds_md) + stripes * 24 (lov_ost_data),
641 * and we want some margin above that for ACLs, other EAs... */
642 if (strstr(mop->mo_mkfsopts, "-I") == NULL) {
644 if (IS_MDT(&mop->mo_ldd)) {
645 if (mop->mo_stripe_count > 72)
646 inode_size = 512; /* bz 7241 */
647 /* cray stripes across all osts (>60) */
648 else if (mop->mo_stripe_count > 32)
650 else if (mop->mo_stripe_count > 10)
654 } else if (IS_OST(&mop->mo_ldd)) {
655 /* now as we store fids in EA on OST we need
656 to make inode bigger */
660 if (inode_size > 0) {
661 sprintf(buf, " -I %ld", inode_size);
662 strscat(mop->mo_mkfsopts, buf,
663 sizeof(mop->mo_mkfsopts));
668 strscat(mop->mo_mkfsopts, " -q",
669 sizeof(mop->mo_mkfsopts));
672 if (strstr(mop->mo_mkfsopts, "-O") == NULL)
673 enable_default_backfs_features(mop);
675 /* Allow reformat of full devices (as opposed to
676 partitions.) We already checked for mounted dev. */
677 strscat(mop->mo_mkfsopts, " -F", sizeof(mop->mo_mkfsopts));
679 snprintf(mkfs_cmd, sizeof(mkfs_cmd),
680 "%s -j -b %d -L %s ", MKE2FS, L_BLOCK_SIZE,
681 mop->mo_ldd.ldd_svname);
683 } else if (mop->mo_ldd.ldd_mount_type == LDD_MT_REISERFS) {
684 long journal_sz = 0; /* FIXME default journal size */
685 if (journal_sz > 0) {
686 sprintf(buf, " --journal_size %ld", journal_sz);
687 strscat(mop->mo_mkfsopts, buf,
688 sizeof(mop->mo_mkfsopts));
690 snprintf(mkfs_cmd, sizeof(mkfs_cmd), "mkreiserfs -ff ");
693 fprintf(stderr,"%s: unsupported fs type: %d (%s)\n",
694 progname, mop->mo_ldd.ldd_mount_type,
695 MT_STR(&mop->mo_ldd));
699 /* For loop device format the dev, not the filename */
700 dev = mop->mo_device;
701 if (mop->mo_flags & MO_IS_LOOP)
702 dev = mop->mo_loopdev;
704 vprint("formatting backing filesystem %s on %s\n",
705 MT_STR(&mop->mo_ldd), dev);
706 vprint("\ttarget name %s\n", mop->mo_ldd.ldd_svname);
707 vprint("\t4k blocks "LPU64"\n", block_count);
708 vprint("\toptions %s\n", mop->mo_mkfsopts);
710 /* mkfs_cmd's trailing space is important! */
711 strscat(mkfs_cmd, mop->mo_mkfsopts, sizeof(mkfs_cmd));
712 strscat(mkfs_cmd, " ", sizeof(mkfs_cmd));
713 strscat(mkfs_cmd, dev, sizeof(mkfs_cmd));
714 if (block_count != 0) {
715 sprintf(buf, " "LPU64, block_count);
716 strscat(mkfs_cmd, buf, sizeof(mkfs_cmd));
719 vprint("mkfs_cmd = %s\n", mkfs_cmd);
720 ret = run_command(mkfs_cmd, sizeof(mkfs_cmd));
723 fprintf(stderr, "Unable to build fs %s (%d)\n", dev, ret);
728 /* ==================== Lustre config functions =============*/
730 void print_ldd(char *str, struct lustre_disk_data *ldd)
732 printf("\n %s:\n", str);
733 printf("Target: %s\n", ldd->ldd_svname);
734 if (ldd->ldd_svindex == INDEX_UNASSIGNED)
735 printf("Index: unassigned\n");
737 printf("Index: %d\n", ldd->ldd_svindex);
738 if (ldd->ldd_uuid[0])
739 printf("UUID: %s\n", (char *)ldd->ldd_uuid);
740 printf("Lustre FS: %s\n", ldd->ldd_fsname);
741 printf("Mount type: %s\n", MT_STR(ldd));
742 printf("Flags: %#x\n", ldd->ldd_flags);
743 printf(" (%s%s%s%s%s%s%s%s)\n",
744 IS_MDT(ldd) ? "MDT ":"",
745 IS_OST(ldd) ? "OST ":"",
746 IS_MGS(ldd) ? "MGS ":"",
747 ldd->ldd_flags & LDD_F_NEED_INDEX ? "needs_index ":"",
748 ldd->ldd_flags & LDD_F_VIRGIN ? "first_time ":"",
749 ldd->ldd_flags & LDD_F_UPDATE ? "update ":"",
750 ldd->ldd_flags & LDD_F_WRITECONF ? "writeconf ":"",
751 ldd->ldd_flags & LDD_F_UPGRADE14 ? "upgrade1.4 ":"");
752 printf("Persistent mount opts: %s\n", ldd->ldd_mount_opts);
753 printf("Parameters:%s\n", ldd->ldd_params);
754 if (ldd->ldd_userdata[0])
755 printf("Comment: %s\n", ldd->ldd_userdata);
759 /* Write the server config files */
760 int write_local_files(struct mkfs_opts *mop)
762 char mntpt[] = "/tmp/mntXXXXXX";
769 /* Mount this device temporarily in order to write these files */
770 if (!mkdtemp(mntpt)) {
771 fprintf(stderr, "%s: Can't create temp mount point %s: %s\n",
772 progname, mntpt, strerror(errno));
776 dev = mop->mo_device;
777 if (mop->mo_flags & MO_IS_LOOP)
778 dev = mop->mo_loopdev;
780 ret = mount(dev, mntpt, MT_STR(&mop->mo_ldd), 0,
781 mop->mo_ldd.ldd_mount_opts);
783 fprintf(stderr, "%s: Unable to mount %s: %s\n",
784 progname, dev, strerror(errno));
786 if (errno == ENODEV) {
787 fprintf(stderr, "Is the %s module available?\n",
788 MT_STR(&mop->mo_ldd));
793 /* Set up initial directories */
794 sprintf(filepnm, "%s/%s", mntpt, MOUNT_CONFIGS_DIR);
795 ret = mkdir(filepnm, 0777);
796 if ((ret != 0) && (errno != EEXIST)) {
797 fprintf(stderr, "%s: Can't make configs dir %s: %s\n",
798 progname, filepnm, strerror(errno));
800 } else if (errno == EEXIST) {
804 /* Save the persistent mount data into a file. Lustre must pre-read
805 this file to get the real mount options. */
806 vprint("Writing %s\n", MOUNT_DATA_FILE);
807 sprintf(filepnm, "%s/%s", mntpt, MOUNT_DATA_FILE);
808 filep = fopen(filepnm, "w");
810 fprintf(stderr, "%s: Unable to create %s file: %s\n",
811 progname, filepnm, strerror(errno));
814 num = fwrite(&mop->mo_ldd, sizeof(mop->mo_ldd), 1, filep);
815 if (num < 1 && ferror(filep)) {
816 fprintf(stderr, "%s: Unable to write to file (%s): %s\n",
817 progname, filepnm, strerror(errno));
824 /* Check for upgrade */
825 if ((mop->mo_ldd.ldd_flags & (LDD_F_UPGRADE14 | LDD_F_SV_TYPE_MGS))
826 == (LDD_F_UPGRADE14 | LDD_F_SV_TYPE_MGS)) {
829 int cmdsz = sizeof(cmd);
830 vprint("Copying old logs\n");
832 /* Copy the old client log to fsname-client */
833 sprintf(filepnm, "%s/%s/%s-client",
834 mntpt, MOUNT_CONFIGS_DIR, mop->mo_ldd.ldd_fsname);
835 snprintf(cmd, cmdsz, "cp %s/%s/client %s", mntpt, MDT_LOGS_DIR,
837 ret = run_command(cmd, cmdsz);
839 fprintf(stderr, "%s: Can't copy 1.4 config %s/client "
840 "(%d)\n", progname, MDT_LOGS_DIR, ret);
841 fprintf(stderr, "mount -t ldiskfs %s somewhere, "
842 "find the client log for fs %s and "
843 "copy it manually into %s/%s-client, "
846 mop->mo_ldd.ldd_fsname, MOUNT_CONFIGS_DIR,
847 mop->mo_ldd.ldd_fsname);
851 /* We need to use the old mdt log because otherwise mdt won't
852 have complete lov if old clients connect before all
854 /* Copy the old mdt log to fsname-MDT0000 (get old
855 name from mdt_UUID) */
857 strscpy(filepnm, (char *)mop->mo_ldd.ldd_uuid, sizeof(filepnm));
858 term = strstr(filepnm, "_UUID");
861 snprintf(cmd, cmdsz, "cp %s/%s/%s %s/%s/%s",
862 mntpt, MDT_LOGS_DIR, filepnm,
863 mntpt, MOUNT_CONFIGS_DIR,
864 mop->mo_ldd.ldd_svname);
865 ret = run_command(cmd, cmdsz);
868 fprintf(stderr, "%s: Can't copy 1.4 config %s/%s "
869 "(%d)\n", progname, MDT_LOGS_DIR, filepnm, ret);
870 fprintf(stderr, "mount -t ext3 %s somewhere, "
871 "find the MDT log for fs %s and "
872 "copy it manually into %s/%s, "
875 mop->mo_ldd.ldd_fsname, MOUNT_CONFIGS_DIR,
876 mop->mo_ldd.ldd_svname);
891 int read_local_files(struct mkfs_opts *mop)
893 char tmpdir[] = "/tmp/dirXXXXXX";
899 int cmdsz = sizeof(cmd);
901 /* Make a temporary directory to hold Lustre data files. */
902 if (!mkdtemp(tmpdir)) {
903 fprintf(stderr, "%s: Can't create temporary directory %s: %s\n",
904 progname, tmpdir, strerror(errno));
908 dev = mop->mo_device;
910 /* TODO: it's worth observing the get_mountdata() function that is
911 in mount_utils.c for getting the mountdata out of the
914 /* Construct debugfs command line. */
915 snprintf(cmd, cmdsz, "%s -c -R 'dump /%s %s/mountdata' '%s'",
916 DEBUGFS, MOUNT_DATA_FILE, tmpdir, dev);
918 ret = run_command(cmd, cmdsz);
920 verrprint("%s: Unable to dump %s dir (%d)\n",
921 progname, MOUNT_CONFIGS_DIR, ret);
923 sprintf(filepnm, "%s/mountdata", tmpdir);
924 filep = fopen(filepnm, "r");
927 vprint("Reading %s\n", MOUNT_DATA_FILE);
928 num_read = fread(&mop->mo_ldd, sizeof(mop->mo_ldd), 1, filep);
929 if (num_read < 1 && ferror(filep)) {
930 fprintf(stderr, "%s: Unable to read from file (%s): %s\n",
931 progname, filepnm, strerror(errno));
936 /* Try to read pre-1.6 config from last_rcvd */
937 struct lr_server_data lsd;
938 verrprint("%s: Unable to read %d.%d config %s.\n",
939 progname, LUSTRE_MAJOR, LUSTRE_MINOR, filepnm);
941 verrprint("Trying 1.4 config from last_rcvd\n");
942 sprintf(filepnm, "%s/%s", tmpdir, LAST_RCVD);
944 /* Construct debugfs command line. */
945 snprintf(cmd, cmdsz, "%s -c -R 'dump /%s %s' %s",
946 DEBUGFS, LAST_RCVD, filepnm, dev);
948 ret = run_command(cmd, cmdsz);
950 fprintf(stderr, "%s: Unable to dump %s file (%d)\n",
951 progname, LAST_RCVD, ret);
955 filep = fopen(filepnm, "r");
957 fprintf(stderr, "%s: Unable to open %s: %s\n",
958 progname, filepnm, strerror(errno));
960 verrprint("Contents of %s:\n", tmpdir);
962 snprintf(cmd, cmdsz, "ls -l %s/", tmpdir);
963 run_command(cmd, cmdsz);
964 verrprint("Contents of disk:\n");
965 snprintf(cmd, cmdsz, "%s -c -R 'ls -l /' %s",
967 run_command(cmd, cmdsz);
971 vprint("Reading %s\n", LAST_RCVD);
972 ret = fread(&lsd, 1, sizeof(lsd), filep);
973 if (ret < sizeof(lsd)) {
974 fprintf(stderr, "%s: Short read (%d of %d)\n",
975 progname, ret, (int)sizeof(lsd));
980 vprint("Feature compat=%x, incompat=%x\n",
981 lsd.lsd_feature_compat, lsd.lsd_feature_incompat);
983 if ((lsd.lsd_feature_compat & OBD_COMPAT_OST) ||
984 (lsd.lsd_feature_incompat & OBD_INCOMPAT_OST)) {
985 mop->mo_ldd.ldd_flags = LDD_F_SV_TYPE_OST;
986 mop->mo_ldd.ldd_svindex = lsd.lsd_ost_index;
987 } else if ((lsd.lsd_feature_compat & OBD_COMPAT_MDT) ||
988 (lsd.lsd_feature_incompat & OBD_INCOMPAT_MDT)) {
989 /* We must co-locate so mgs can see old logs.
990 If user doesn't want this, they can copy the old
991 logs manually and re-tunefs. */
992 mop->mo_ldd.ldd_flags =
993 LDD_F_SV_TYPE_MDT | LDD_F_SV_TYPE_MGS;
994 mop->mo_ldd.ldd_svindex = lsd.lsd_mdt_index;
996 /* If neither is set, we're pre-1.4.6, make a guess. */
997 /* Construct debugfs command line. */
998 snprintf(cmd, cmdsz, "%s -c -R 'rdump /%s %s' %s",
999 DEBUGFS, MDT_LOGS_DIR, tmpdir, dev);
1000 run_command(cmd, cmdsz);
1002 sprintf(filepnm, "%s/%s", tmpdir, MDT_LOGS_DIR);
1003 if (lsd.lsd_ost_index > 0) {
1004 mop->mo_ldd.ldd_flags = LDD_F_SV_TYPE_OST;
1005 mop->mo_ldd.ldd_svindex = lsd.lsd_ost_index;
1007 /* If there's a LOGS dir, it's an MDT */
1008 if ((ret = access(filepnm, F_OK)) == 0) {
1009 mop->mo_ldd.ldd_flags =
1012 /* Old MDT's are always index 0
1014 mop->mo_ldd.ldd_svindex = 0;
1016 /* The index may not be correct */
1017 mop->mo_ldd.ldd_flags =
1018 LDD_F_SV_TYPE_OST | LDD_F_NEED_INDEX;
1019 verrprint("OST with unknown index\n");
1025 memcpy(mop->mo_ldd.ldd_uuid, lsd.lsd_uuid,
1026 sizeof(mop->mo_ldd.ldd_uuid));
1027 mop->mo_ldd.ldd_flags |= LDD_F_UPGRADE14;
1029 /* end COMPAT_146 */
1034 snprintf(cmd, cmdsz, "rm -rf %s", tmpdir);
1035 run_command(cmd, cmdsz);
1037 verrprint("Failed to read old data (%d)\n", ret);
1042 void set_defaults(struct mkfs_opts *mop)
1044 mop->mo_ldd.ldd_magic = LDD_MAGIC;
1045 mop->mo_ldd.ldd_config_ver = 1;
1046 mop->mo_ldd.ldd_flags = LDD_F_NEED_INDEX | LDD_F_UPDATE | LDD_F_VIRGIN;
1047 mop->mo_mgs_failnodes = 0;
1048 strcpy(mop->mo_ldd.ldd_fsname, "lustre");
1049 if (get_os_version() == 24)
1050 mop->mo_ldd.ldd_mount_type = LDD_MT_EXT3;
1052 mop->mo_ldd.ldd_mount_type = LDD_MT_LDISKFS;
1054 mop->mo_ldd.ldd_svindex = INDEX_UNASSIGNED;
1055 mop->mo_stripe_count = 1;
1058 static inline void badopt(const char *opt, char *type)
1060 fprintf(stderr, "%s: '--%s' only valid for %s\n",
1061 progname, opt, type);
1065 static int clean_param(char *buf, char *key)
1071 if ((sub = strstr(buf, key)) != NULL) {
1072 if ((next = strchr(sub, ' ')) != NULL) {
1074 memmove(sub, next, strlen(next) + 1);
1082 static int add_param(char *buf, char *key, char *val, int unique)
1084 int end = sizeof(((struct lustre_disk_data *)0)->ldd_params);
1090 keylen = strlen(key);
1093 clean_param(buf, key);
1095 if ((ptr = strchr(val, '=')) == NULL)
1098 clean_param(buf, val);
1103 start = strlen(buf);
1104 if (start + 1 + keylen + strlen(val) >= end) {
1105 fprintf(stderr, "%s: params are too long-\n%s %s%s\n",
1106 progname, buf, key ? key : "", val);
1110 sprintf(buf + start, " %s%s", key ? key : "", val);
1114 /* from mount_lustre */
1115 /* Get rid of symbolic hostnames for tcp, since kernel can't do lookups */
1116 #define MAXNIDSTR 1024
1117 static char *convert_hostnames(char *s1)
1119 char *converted, *s2 = 0, *c, *end, sep;
1120 int left = MAXNIDSTR;
1123 converted = malloc(left);
1124 if (converted == NULL) {
1125 fprintf(stderr, "out of memory: needed %d bytes\n",
1129 end = s1 + strlen(s1);
1131 while ((left > 0) && (s1 < end)) {
1132 s2 = strpbrk(s1, ",:");
1137 nid = libcfs_str2nid(s1);
1139 if (nid == LNET_NID_ANY) {
1140 fprintf(stderr, "%s: Can't parse NID '%s'\n", progname, s1);
1144 if (strncmp(libcfs_nid2str(nid), "127.0.0.1",
1145 strlen("127.0.0.1")) == 0) {
1146 fprintf(stderr, "%s: The NID '%s' resolves to the "
1147 "loopback address '%s'. Lustre requires a "
1148 "non-loopback address.\n",
1149 progname, s1, libcfs_nid2str(nid));
1154 c += snprintf(c, left, "%s%c", libcfs_nid2str(nid), sep);
1155 left = converted + MAXNIDSTR - c;
1161 int parse_opts(int argc, char *const argv[], struct mkfs_opts *mop,
1164 static struct option long_opt[] = {
1165 {"backfstype", 1, 0, 'b'},
1166 {"stripe-count-hint", 1, 0, 'c'},
1167 {"comment", 1, 0, 'u'},
1168 {"configdev", 1, 0, 'C'},
1169 {"device-size", 1, 0, 'd'},
1170 {"dryrun", 0, 0, 'n'},
1171 {"erase-params", 0, 0, 'e'},
1172 {"failnode", 1, 0, 'f'},
1173 {"failover", 1, 0, 'f'},
1175 {"help", 0, 0, 'h'},
1176 {"index", 1, 0, 'i'},
1177 {"mkfsoptions", 1, 0, 'k'},
1178 {"mgsnode", 1, 0, 'm'},
1179 {"mgsnid", 1, 0, 'm'},
1181 {"fsname",1, 0, 'L'},
1182 {"noformat", 0, 0, 'n'},
1183 {"nomgs", 0, 0, 'N'},
1184 {"mountfsoptions", 1, 0, 'o'},
1186 {"param", 1, 0, 'p'},
1187 {"print", 0, 0, 'n'},
1188 {"quiet", 0, 0, 'q'},
1189 {"reformat", 0, 0, 'r'},
1190 {"verbose", 0, 0, 'v'},
1191 {"writeconf", 0, 0, 'w'},
1194 char *optstring = "b:c:C:d:ef:Ghi:k:L:m:MnNo:Op:Pqru:vw";
1198 const size_t prefix_len = sizeof(PARAM_MDT_UPCALL) - 1;
1200 while ((opt = getopt_long(argc, argv, optstring, long_opt, &longidx)) !=
1205 while (i < LDD_MT_LAST) {
1206 if (strcmp(optarg, mt_str(i)) == 0) {
1207 mop->mo_ldd.ldd_mount_type = i;
1215 if (IS_MDT(&mop->mo_ldd)) {
1216 int stripe_count = atol(optarg);
1217 if (stripe_count <= 0) {
1218 fprintf(stderr, "%s: bad stripe count "
1219 "%d\n", progname, stripe_count);
1222 mop->mo_stripe_count = stripe_count;
1224 badopt(long_opt[longidx].name, "MDT");
1228 case 'C': /* Configdev */
1230 printf("Configdev not implemented\n");
1233 mop->mo_device_sz = atol(optarg);
1236 mop->mo_ldd.ldd_params[0] = '\0';
1237 /* Must update the mgs logs */
1238 mop->mo_ldd.ldd_flags |= LDD_F_UPDATE;
1241 char *nids = convert_hostnames(optarg);
1244 rc = add_param(mop->mo_ldd.ldd_params, PARAM_FAILNODE,
1249 /* Must update the mgs logs */
1250 mop->mo_ldd.ldd_flags |= LDD_F_UPDATE;
1255 mop->mo_ldd.ldd_flags |= LDD_F_SV_TYPE_MGS;
1261 if (!(mop->mo_ldd.ldd_flags &
1262 (LDD_F_UPGRADE14 | LDD_F_VIRGIN |
1263 LDD_F_WRITECONF))) {
1264 fprintf(stderr, "%s: cannot change the index of"
1265 " a registered target\n", progname);
1268 if (IS_MDT(&mop->mo_ldd) || IS_OST(&mop->mo_ldd)) {
1269 mop->mo_ldd.ldd_svindex = atol(optarg);
1270 mop->mo_ldd.ldd_flags &= ~LDD_F_NEED_INDEX;
1272 badopt(long_opt[longidx].name, "MDT,OST");
1277 strscpy(mop->mo_mkfsopts, optarg,
1278 sizeof(mop->mo_mkfsopts));
1282 if (!(mop->mo_flags & MO_FORCEFORMAT) &&
1283 (!(mop->mo_ldd.ldd_flags &
1284 (LDD_F_UPGRADE14 | LDD_F_VIRGIN |
1285 LDD_F_WRITECONF)))) {
1286 fprintf(stderr, "%s: cannot change the name of"
1287 " a registered target\n", progname);
1290 if ((strlen(optarg) < 1) || (strlen(optarg) > 8)) {
1291 fprintf(stderr, "%s: filesystem name must be "
1292 "1-8 chars\n", progname);
1295 if ((tmp = strpbrk(optarg, "/:"))) {
1296 fprintf(stderr, "%s: char '%c' not allowed in "
1297 "filesystem name\n", progname, *tmp);
1300 strscpy(mop->mo_ldd.ldd_fsname, optarg,
1301 sizeof(mop->mo_ldd.ldd_fsname));
1305 char *nids = convert_hostnames(optarg);
1308 rc = add_param(mop->mo_ldd.ldd_params, PARAM_MGSNODE,
1313 mop->mo_mgs_failnodes++;
1317 mop->mo_ldd.ldd_flags |= LDD_F_SV_TYPE_MDT;
1323 mop->mo_ldd.ldd_flags &= ~LDD_F_SV_TYPE_MGS;
1326 *mountopts = optarg;
1329 mop->mo_ldd.ldd_flags |= LDD_F_SV_TYPE_OST;
1332 /* Test if the param is valid for mdt.group_upcall */
1333 if (!strncmp(optarg, PARAM_MDT_UPCALL, prefix_len)) {
1335 if (strcmp(optarg + prefix_len, "NONE") &&
1336 access(optarg + prefix_len, R_OK | X_OK))
1337 fprintf(stderr, "WARNING: group upcall "
1338 "parameter not executable: %s\n"
1339 "NOTE: you can change the path "
1340 "to the group upcall through "
1341 "tunefs.lustre(8)\n", optarg +
1344 rc = add_param(mop->mo_ldd.ldd_params, NULL, optarg, 0);
1347 /* Must update the mgs logs */
1348 mop->mo_ldd.ldd_flags |= LDD_F_UPDATE;
1354 mop->mo_flags |= MO_FORCEFORMAT;
1357 strscpy(mop->mo_ldd.ldd_userdata, optarg,
1358 sizeof(mop->mo_ldd.ldd_userdata));
1364 mop->mo_ldd.ldd_flags |= LDD_F_WRITECONF;
1369 fprintf(stderr, "Unknown option '%c'\n", opt);
1375 /* Last arg is device */
1376 if (optind != argc - 1) {
1378 fprintf(stderr, "Bad argument: %s\n", argv[optind]);
1382 /* single argument: <device> */
1387 if (mop->mo_ldd.ldd_flags & LDD_F_SV_TYPE_MDT && 0 == upcall) {
1388 if (access("/usr/sbin/l_getgroups", R_OK | X_OK)) {
1389 fprintf(stderr, "WARNING: MDS group upcall is not set, "
1392 rc = add_param(mop->mo_ldd.ldd_params, PARAM_MDT_UPCALL,
1393 "/usr/sbin/l_getgroups", 1);
1396 /* Must update the mgs logs */
1397 mop->mo_ldd.ldd_flags |= LDD_F_UPDATE;
1405 /* Search for opt in mntlist, returning true if found.
1407 static int in_mntlist(char *opt, char *mntlist)
1409 char *ml, *mlp, *item, *ctx = NULL;
1411 if (!(ml = strdup(mntlist))) {
1412 fprintf(stderr, "%s: out of memory\n", progname);
1416 while ((item = strtok_r(mlp, ",", &ctx))) {
1417 if (!strcmp(opt, item))
1422 return (item != NULL);
1425 /* Issue a message on stderr for every item in wanted_mountopts that is not
1426 * present in mountopts. The justwarn boolean toggles between error and
1427 * warning message. Return an error count.
1429 static int check_mountfsoptions(char *mountopts, char *wanted_mountopts,
1432 char *ml, *mlp, *item, *ctx = NULL;
1435 if (!(ml = strdup(wanted_mountopts))) {
1436 fprintf(stderr, "%s: out of memory\n", progname);
1440 while ((item = strtok_r(mlp, ",", &ctx))) {
1441 if (!in_mntlist(item, mountopts)) {
1442 fprintf(stderr, "%s: %s mount option `%s' is missing\n",
1443 progname, justwarn ? "Warning: default"
1444 : "Error: mandatory", item);
1453 /* Trim embedded white space, leading and trailing commas from string s.
1455 static void trim_mountfsoptions(char *s)
1461 memmove(p, p + 1, strlen(p + 1) + 1);
1468 memmove(&s[0], &s[1], strlen(&s[1]) + 1);
1470 p = s + strlen(s) - 1;
1471 while (p >= s && *p == ',')
1475 int main(int argc, char *const argv[])
1477 struct mkfs_opts mop;
1478 struct lustre_disk_data *ldd;
1479 char *mountopts = NULL;
1480 char always_mountopts[512] = "";
1481 char default_mountopts[512] = "";
1484 if ((progname = strrchr(argv[0], '/')) != NULL)
1489 if ((argc < 2) || (argv[argc - 1][0] == '-')) {
1494 memset(&mop, 0, sizeof(mop));
1497 /* device is last arg */
1498 strscpy(mop.mo_device, argv[argc - 1], sizeof(mop.mo_device));
1500 /* Are we using a loop device? */
1501 ret = is_block(mop.mo_device);
1505 mop.mo_flags |= MO_IS_LOOP;
1508 /* For tunefs, we must read in the old values before parsing any
1511 /* Check whether the disk has already been formatted by mkfs.lustre */
1512 ret = is_lustre_target(&mop);
1515 fprintf(stderr, "Device %s has not been formatted with "
1516 "mkfs.lustre\n", mop.mo_device);
1521 ret = read_local_files(&mop);
1524 fprintf(stderr, "Failed to read previous Lustre data from %s "
1525 "(%d)\n", mop.mo_device, ret);
1528 if (strstr(mop.mo_ldd.ldd_params, PARAM_MGSNODE))
1529 mop.mo_mgs_failnodes++;
1532 print_ldd("Read previous values", &(mop.mo_ldd));
1535 ret = parse_opts(argc, argv, &mop, &mountopts);
1541 if (!(IS_MDT(ldd) || IS_OST(ldd) || IS_MGS(ldd))) {
1543 fprintf(stderr, "must set target type: MDT,OST,MGS\n");
1548 if (((IS_MDT(ldd) || IS_MGS(ldd))) && IS_OST(ldd)) {
1550 fprintf(stderr, "OST type is exclusive with MDT,MGS\n");
1555 if ((mop.mo_ldd.ldd_flags & (LDD_F_NEED_INDEX | LDD_F_UPGRADE14)) ==
1556 (LDD_F_NEED_INDEX | LDD_F_UPGRADE14)) {
1558 fprintf(stderr, "Can't find the target index, "
1559 "specify with --index\n");
1564 if (!IS_MGS(ldd) && (mop.mo_mgs_failnodes == 0)) {
1567 fprintf(stderr, "Must specify --mgs or --mgsnode=\n");
1569 fprintf(stderr, "Must specify --mgsnode=\n");
1574 /* These are the permanent mount options (always included) */
1575 switch (ldd->ldd_mount_type) {
1577 case LDD_MT_LDISKFS:
1578 case LDD_MT_LDISKFS2: {
1579 strscat(default_mountopts, ",errors=remount-ro",
1580 sizeof(default_mountopts));
1581 if (IS_MDT(ldd) || IS_MGS(ldd))
1582 strscat(always_mountopts, ",iopen_nopriv,user_xattr",
1583 sizeof(always_mountopts));
1584 if ((get_os_version() == 24) && IS_OST(ldd))
1585 strscat(always_mountopts, ",asyncdel",
1586 sizeof(always_mountopts));
1587 /* NB: Files created while extents are enabled cannot be read
1588 if mounted with a kernel that doesn't include the Lustre ldiskfs
1591 (ldd->ldd_mount_type == LDD_MT_LDISKFS ||
1592 ldd->ldd_mount_type == LDD_MT_LDISKFS2)) {
1593 strscat(default_mountopts, ",extents,mballoc",
1594 sizeof(default_mountopts));
1599 mop.mo_flags |= MO_IS_LOOP;
1600 sprintf(always_mountopts, ",type=ext3,dev=%s",
1606 fprintf(stderr, "unknown fs type %d '%s'\n",
1607 ldd->ldd_mount_type,
1615 trim_mountfsoptions(mountopts);
1616 (void)check_mountfsoptions(mountopts, default_mountopts, 1);
1617 if (check_mountfsoptions(mountopts, always_mountopts, 0)) {
1621 sprintf(ldd->ldd_mount_opts, "%s", mountopts);
1624 if (ldd->ldd_mount_opts[0] == 0)
1625 /* use the defaults unless old opts exist */
1628 sprintf(ldd->ldd_mount_opts, "%s%s",
1629 always_mountopts, default_mountopts);
1630 trim_mountfsoptions(ldd->ldd_mount_opts);
1634 server_make_name(ldd->ldd_flags, ldd->ldd_svindex,
1635 ldd->ldd_fsname, ldd->ldd_svname);
1638 print_ldd("Permanent disk data", ldd);
1641 printf("exiting before disk write.\n");
1645 if (check_mtab_entry(mop.mo_device))
1648 /* Create the loopback file */
1649 if (mop.mo_flags & MO_IS_LOOP) {
1650 ret = access(mop.mo_device, F_OK);
1653 #ifndef TUNEFS /* mkfs.lustre */
1654 /* Reformat the loopback file */
1655 if (ret || (mop.mo_flags & MO_FORCEFORMAT))
1656 ret = loop_format(&mop);
1659 ret = loop_setup(&mop);
1662 fprintf(stderr, "Loop device setup for %s failed: %s\n",
1663 mop.mo_device, strerror(ret));
1668 #ifndef TUNEFS /* mkfs.lustre */
1669 /* Check whether the disk has already been formatted by mkfs.lustre */
1670 if (!(mop.mo_flags & MO_FORCEFORMAT)) {
1671 ret = is_lustre_target(&mop);
1674 fprintf(stderr, "Device %s was previously formatted "
1675 "for lustre. Use --reformat to reformat it, "
1676 "or tunefs.lustre to modify.\n",
1682 /* Format the backing filesystem */
1683 ret = make_lustre_backfs(&mop);
1686 fprintf(stderr, "mkfs failed %d\n", ret);
1691 /* Write our config files */
1692 ret = write_local_files(&mop);
1695 fprintf(stderr, "failed to write local files\n");
1702 /* Fix any crazy return values from system() */
1703 if (ret && ((ret & 255) == 0))
1706 verrprint("%s: exiting with %d (%s)\n",
1707 progname, ret, strerror(ret));